Results 81 to 90 of about 21,748,467 (375)

Models and relations in economics and econometrics [PDF]

open access: yesJournal of Economic Methodology, 1999
Abstract Chapter 1 discussed the difficult link between a theory model and an empirical model based on data collected by passive observation. This chapter discusses the VAR approach as a general framework within which statistical inference on macroeconomic hypotheses can be given a valid formulation.
openaire   +5 more sources

In Situ Graph Reasoning and Knowledge Expansion Using Graph‐PRefLexOR

open access: yesAdvanced Intelligent Discovery, EarlyView.
Graph‐PRefLexOR is a novel framework that enhances language models with in situ graph reasoning, symbolic abstraction, and recursive refinement. By integrating graph‐based representations into generative tasks, the approach enables interpretable, multistep reasoning.
Markus J. Buehler
wiley   +1 more source

CREATING AND ENCRYPTING E-COMMERCE DATABASE FOR SELLING MECHANICAL ELEMENTS

open access: yesApplied Engineering Letters, 2018
In this paper it is presented creation and encryption of e-commerce database for selling mechanical elements. It is shown a procedure of creation a database and tables with appropriate data, which is the first step in developing stable e-commerce ...
Djordje Dihovični, Vlado Krunić
doaj   +1 more source

A Model for Relational Marketing [PDF]

open access: yesOvidius University Annals: Economic Sciences Series, 2018
Relational marketing, connects the new type of consumer and society, redefines the meaning ofthe act of buying by taking into account the needs and expectations of the clients.
Negoiță Olivia Doina   +2 more
doaj  

NHL and RCGA Based Multi-Relational Fuzzy Cognitive Map Modeling for Complex Systems

open access: yesApplied Sciences, 2015
In order to model multi-dimensions and multi-granularities oriented complex systems, this paper firstly proposes a kind of multi-relational Fuzzy Cognitive Map (FCM) to simulate the multi-relational system and its auto construct algorithm integrating ...
Zhen Peng, Lifeng Wu, Zhenguo Chen
doaj   +1 more source

Order dependency in the relational model

open access: yesComputer Compacts, 1983
Most relational theory ignores the structure of the domains over which attributes range. In this study, the authors consider partial and total orders on domains and then analyze the data dependencies that are then expressible, which are called order dependencies. Order dependencies formalize properties of data such as ''check numbers increase with time'
Richard Hull, Seymour Ginsburg
openaire   +4 more sources

Artificial Intelligences: A Bridge Toward Diverse Intelligence and Humanity's Future

open access: yesAdvanced Intelligent Systems, EarlyView.
Many discussions of artificial intelligence fail to address deeper questions being raised by advances in developmental biology, neuroscience, bioengineering, and philosophy of mind. Novel beings, including technologically and biologically augmented humans, engineered life forms, hybrots, and others, require tools of the emerging field of diverse ...
Michael Levin
wiley   +1 more source

Self‐Organized Multitarget Pursuit in Multi‐Unmanned Aerial Vehicle Systems via Hierarchical Probabilistic Graphical Models

open access: yesAdvanced Intelligent Systems, EarlyView.
Multi‐UAV systems face challenges in adversarial environments due to limited adaptability and interpretability. This study proposes a self‐organized approach using hierarchical probabilistic graphical models with density‐driven parameter estimation.
Yixin Huang   +5 more
wiley   +1 more source

The Effect of Dynamic Relationship Capabilities on B2B Lolyalty

open access: yesTheory, Methodology, Practice, 2016
The focal issue of our study is to model the adaptation capability of enterprises from a relational point of view in the South Great Plain Region of Hungary.
Márton Vilmányi, Erzsébet Hetesi
doaj   +2 more sources

Congruence relations on finitary models [PDF]

open access: yesCzechoslovak Mathematical Journal, 1992
The theory of congruence lattices of universal algebras is one of the most rich and developed parts of contemporary algebra. Unfortunately, the rather special and purely internal definition of the congruence relation does not extend directly to structures other than sets with operations; in fact it even does not apply to the slightly more general ...
Ivo G. Rosenberg, Teo Sturm
openaire   +3 more sources

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